[MetroMPG]

If we keep the car long enough to completely wear out the 2 sets of old batteries we have, I'm sure we'll feel like a new pack will be worth the investment.

Besides: now we're properly equipped so that the investment would be protected: the combination of the proper 3 stage smart charger and now a proper means of monitoring the pack means it wouldn't be abused by our (old) dumb charger or damaged out of ignorance from over discharging the weakest battery(ies) while driving.

I'm definitely going to make up a short YouTube vid showing the LED pack monitor. It's too cool.